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题名: Adsorption of phosphate in water using one-step synthesized zirconium-loaded reduced graphene oxide
作者: Luo, Xin1, 2; Wang, Xiurong1; Bao, Shaopan1, 2; Liu, Xiawei1, 2; Zhang, Weicheng1; Fang, Tao1
刊名: SCIENTIFIC REPORTS
发表日期: 2016-12-15
DOI: 10.1038/srep39108
卷: 6
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
英文摘要: In this account, a one-step green hydrothermal method for zirconium-loaded reduced graphene oxide (RGO-Zr) adsorbent was developed in pure water. It is based on the formation of initially strong-coupling RGO-Zr nanocomposites followed by in situ reduction of GO to RGO during the hydrothermal treatment. The phosphate adsorption performance of the as-prepared nanocomposites was investigated in aqueous environment under various conditions. The characterization results of RGO-Zr nanocomposites showed that ZrO2 was successfully integrated onto the RGO sheets in amorphous. The data from equilibrium phosphate adsorption on RGO-Zr revealed that the adsorption kinetics followed a pseudo-second-order kinetic model, where the adsorption isotherm fitted the Langmuir isotherm model with a maximum adsorption capacity of 27.71 mg P/g at pH 5 and 298 K. The improved phosphate adsorption on RGO-Zr was caused by the dispersion of ZrO2 on the RGO surface. Furthermore, the phosphate adsorption was found insensitive to the increase in pH while it was sensitive to the increase in temperature. The coexisting anions of SO42-, F-, Cl-, NO3- and CO32- affected the phosphate adsorption in a different way. Results suggest that the present RGO-Zr adsorbent has the potential for controlling phosphorus pollution in water.
关键词[WOS]: AQUEOUS-SOLUTION ; METHYLENE-BLUE ; WASTE-WATER ; RAMAN-SPECTROSCOPY ; MODIFIED ZEOLITES ; GRAPHITE OXIDE ; REMOVAL ; REDUCTION ; ADSORBENT ; NANOPARTICLES
语种: 英语
项目资助者: Major Science and Technology Program for Water Pollution Control and Treatment(2012ZX07103-001) ; National Natural Science Foundation of China(21477159)
WOS记录号: WOS:000390193900001
ISSN号: 2045-2322
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/28754
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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